In the world of non-science majors, there are very few people who have completed the things necessary for application to medical school (pre-reqs, MCAT, etc). Many science majors complete the pre-reqs through their general coursework and have little additional work to do to apply to medical school.
Therefore, anyone applying to medical school who is not a science major who is applying to medical school is in a self-selected class who have planned their undergraduate experience carefully and prepped for med school for many years. This certainly is true of some bio, chem, etc. people, but by no means all. This is partially true of some engineers.
The percentages are silly to look at and tell you very little about how you will come across as an applicant.
berberi, MD.
Great liberal art school, BA '00 Studio Art major.
Top 5 medical school, MD '04.